<template>
     <div class="swiper-container" ref="Swiper">
          <div class="swiper-wrapper">
            <div
              class="swiper-slide"
              v-for="item in swiperData"
              :key="item.id"
            >
              <img :src="item.imgUrl" />
            </div>
          </div>
          <!-- 如果需要分页器 -->
          <div class="swiper-pagination"></div>

          <!-- 如果需要导航按钮 -->
          <div class="swiper-button-prev"></div>
          <div class="swiper-button-next"></div>
        </div>
</template>

<script>
import Swiper from "swiper";
import "swiper/css/swiper.min.css";
export default {
name:'Swiper',
props:['swiperData'],
 watch: {
    //监听bannerList的改动,然后准备实例化swiper
    swiperData: {
        immediate:true,
      handler() {
        //因为实例化swiper是操作最新的DOM,所以需要写在$nextTick()回调函数中
        //$nextTick将回调延迟到下次 DOM 更新循环之后执行
        this.$nextTick(() => {
            if(!this.swiperData.length) return
          new Swiper(this.$refs.Swiper, {
            direction: "horizontal", // 垂直切换选项
            loop: true, // 循环模式选项

            // 如果需要分页器
            pagination: {
              el: ".swiper-pagination",
            },

            // 如果需要前进后退按钮
            navigation: {
              nextEl: ".swiper-button-next",
              prevEl: ".swiper-button-prev",
            },

            
          });
        });
      },
    },
  },
}
</script>

<style>

</style>